Bora ransomware removal instructions
What is Bora?
Bora is malicious software designed to encrypt files and create a ransom message ("_readme.txt") that contains information about how to decrypt data. Software of this type is called ransomware. This particular ransomware infection was discovered by Michael Gillespie and is part of Djvu, a family of ransomware-type programs. Like most programs of this type, Bora renames encrypted files by adding an extension to filenames. In this case, it adds the ".bora" extension. For example, "1.jpg" becomes "1.jpg.bora".
According to the cyber criminals who designed Bora, this ransomware encrypts all files including photos, documents, databases, and so on. The only way to recover them is to purchase a decryption tool and unique key. The cost is $980, however, if contacted within 72 hours of encryption, cyber criminals provide a discount of 50%. To receive instructions about how to make payment, each victim must send an email to email@example.com or firstname.lastname@example.org containing a personal ID (appointed to each victim individually). The email can also include one file that cyber criminals offer to decrypt free of charge. They offer free decryption as 'proof' that they have a valid tool that can decrypt files. Only ransomware developers have these decryption tools, however, you should not trust them. They often send no decryption tools even if the ransom is paid. Decryption without the involvement of the developers is generally impossible, leaving victims just one (free) option: restore files from a backup created prior to encryption.
Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:
There are many ransomware-type programs, most of which prevent victims from accessing their files so that cyber criminals can demand ransom payments (blackmail). Common differences are size of ransom and cryptographic algorithm (symmetric or asymmetric) used to encrypt files. In most cases, it is impossible to decrypt files encoded by ransomware without valid tools held only by the ransomware developers. Decryption without their involvement is possible only when ransomware is not complete, has bugs/flaws, and so on. Typically, the only way to recover files without having to pay a ransom is to restore them from a backup. Therefore, have your data backed up and store it on a remote server (for example, Cloud) or unplugged storage device. Examples of other ransomware-type programs include CASH, Sapphire, and Bguu.
How did ransomware infect my computer?
|Threat Type||Ransomware, Crypto Virus, Files locker.|
|Detection Names||Avast (Win32:Malware-gen), BitDefender (Trojan.GenericKD.32573423), ESET-NOD32 (A Variant Of Win32/Kryptik.GXAC), Kaspersky (Trojan-Ransom.Win32.Stop.ef), Full List (VirusTotal)|
|Encrypted Files Extension||.bora|
|Ransom Demanding Message||_readme.txt|
|Cyber Criminal Contactemail@example.com, firstname.lastname@example.org|
|Symptoms||Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals demand pay a ransom (usually in bitcoins) to unlock your files.|
|Additional Information||This malware is designed to modify the Windows "hosts" file to prevent users from accessing cyber security websites (more information below).|
|Distribution methods||Infected email attachments (macros), torrent websites, malicious ads.|
|Damage||All files are encrypted and cannot be opened without paying a ransom. Additional password stealing trojans and malware infections can be installed together with a ransomware infection.|
To eliminate Bora virus our malware researchers recommend scanning your computer with Spyhunter.
How to protect yourself from ransomware infections
Text presented in Bora ransomware text file ("_readme.txt"):
Don't worry, you can return all your files!
All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that's price for you is $490.
Please note that you'll never restore your data without payment.
Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.
To get this software you need write on our e-mail:
Reserve e-mail address to contact us:
Your personal ID:
Screenshot of files encrypted by Bora (".bora" extension):
IMPORTANT NOTE! - As well as encrypting data, ransomware-type infections from the Djvu malware family also add a number of entries to the Windows "hosts" file. The entries contain the URLs of various websites, most of which are related to malware removal. This is done to prevent users from accessing malware security websites and seeking help. Our website (PCrisk.com) is also on the list. Removing these entries, however, is simple - you can find detailed instructions in this article (note that, although the steps are shown in the Windows 10 environment, the process is virtually identical on all versions of the Microsoft Windows operating system).
Screenshot of websites added to Windows hosts file:
There are currently two versions of Djvu ransomware infections - old and new. The old versions were designed to encrypt data by using a hard-coded "offline key" when the infected machine had no internet connection or the server was timing out/not responding. Therefore, some victims were able to decrypt data using a tool developed by cyber security researcher Michael Gillespie. Since the encryption mechanism has been slightly changed (hence the new version), the decrypter no longer works. If your data has been encrypted by an older version, you might be able to restore it with the aforementioned tool (download link). It supports a total of 134 file extensions and you can find the entire list in the "About" screen.
Screenshot of STOP/Djvu decrypter by Michael Gillespie:
Bora ransomware removal:
Instant automatic removal of Bora virus:
Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of Bora virus. Download it by clicking the button below:
- What is Bora?
- STEP 1. Bora virus removal using safe mode with networking.
- STEP 2. Bora ransomware removal using System Restore.
Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.
Video showing how to start Windows 7 in "Safe Mode with Networking":
Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.
Video showing how to start Windows 8 in "Safe Mode with Networking":
Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.
Video showing how to start Windows 10 in "Safe Mode with Networking":
Log in to the account infected with the Bora virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.
If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.
Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":
1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.
2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.
3. Next, type this line: rstrui.exe and press ENTER.
4. In the opened window, click "Next".
5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the Bora ransomware virus infiltrating your PC).
6. In the opened window, click "Yes".
7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining Bora ransomware files.
To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of Bora are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.
To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.
If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.
To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as Bora ransomware.
Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites as well as Desktop folders.
Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.
HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:
Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:
- The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.
Other tools known to remove Bora ransomware: